Lock-nut.



' W. F. HARRIS.

LOOK NUT.

Patented Jan. 12, 1909.

Witnesses I atb o'onu:

' and illustrating the improved nut lock onrran snares ear" ohms-n.

WILL-1AM r. HARRIS, or LAKENAN,1l/HSSOURI; issienoa or one-rooms To once I anonns, QELAKENAN, nrssoonr.

LOCK-NUT.

Specification of Letters Patent.

Patented an. 12, 1909.

To all whom it may concern:

Be it known that I, WILLIAM F.' HARRIS, a citizen of the United States, residing at Lakenan, in the county of Shelby and State of Missouri, have invented new and useful Improvements in Lock-Nuts, of which the following is a specification.

This invention relates to nut locks of that type which can be applied to nuts of standard form so as to prevent the nuts from jarring loose.

The invention has for one of its objects to provide a device of this character which is of extremely simple and inexpensive construction, and readily applied and reliable in use.

Another object of the invention is the provision of a nut lock consisting of a washer having means for clamping it to the parts to be fastened together by the boltand nut in combination with a key arranged to embrace the nut-and to be fastened to the washer so as, to prevent turni g of the nut with respect to the bolt.

With these objects in view and others, as

will appear as the description proceeds, the

invention comprises the various novel features of construction and arrangement of parts which will be more fully described hereinafter and set forth with particularity in the appended claim.

In the accompanying drawing which illustrates one of the embodiments of the invention:-Figure 1 is a transverse section of a railroad rail taken through the joint thereof plied to the bolt. Fig. 2 is a plan view of the nut lock. Figs. 3 and 4 are perspective views of the retaining device or washer and key respectively.

Similar reference characters are employed to designate corresponding parts in the several figures.

In thepresent instance I have elected to illustrate the invention as applied to a railroad rail-but it is to be understood that it can be used in other connections.

Referring to the drawing, A designates a standard rail and B the fish plates for securing two adjacent sectionso'f the rail together 1 and the fish plates are secured to the rail sections by bolts Cto one of which is applied the nut locking device. This device consists of an annular member or washer 2 having a central opening 3 for receiving the threaded shank of the bolt C. i

Formed on the washer adjacent to the periphery thereof is a laterally extending lug i which is adapted to enter an opening 5 formed in one of the fish plates for pre venting the-washer from turning on the bolt and at a point opposite from the lug is an outwardly extending loop 5 formed by tan: gentially disposed lugs 6 that are bent outwardly from opposite sides of the lower portion of the washer and then inwardly meet whereby an elongated loop is formed.

Coiiperating with the washer 2 is an in verted U-shaped key 7 formed of wire of suitable gage and so proportioned as toengage around three sides of a out 1, the side members 8 of the key being of such length as to enter the loop 5 of the washer and project out of the latter so that the extremities 9 can be spread outwardly as shown in Fig. 2 to hold the key in. place. In case it is desired to remove the nut, the members 8 of the hey are swung inwardly and. while held in this position the key is pulled out of the loop of the washer. The not is then free to turn for. permitting the members to be Fill-- bolted. Since the washer can not turn on the bolt, the key will be held in fixed position and prevent the nut from turning.

From the foregoing description taken in connection with the accompanying drawing, the advantages of the construction and of the method of operation will be readily apparcut to those skilled in the art to which the invention appcrtains and while i have described the principle of operation of the in -vention, together with the device which 1' now conslder to be the best embodiment thereof, I desire to'have it understood that the device shown is merely illustrative and that such changes may be made when desired as are Within the scope of the claim appended hereto. I

I claim The combination of a threaded member, a

nut thereon, a washer on the member against i .which the nnt'bears, a lug projecting from I the loop with their extremities bent .out-

the rear side of the washer, a pan' of op Wardly for retainlng the key in'place. 10 positely-disposed members arranged in tan- In testimony whereof l aifix my signature gential relation on the washer and bent outin presence of two Witnesses. r

5 wardly and backwarclly toward each other WVILLIAM F. HARRIS.

to form a loop arranged at one side of the Witnesses: nut, a U-shaped key embracing the nut and C. B. MARTIN,

having its side members extending through 1 N. E. WILLIAMS. 

